Hi Admin, my user tries to send email internally but keeps getting error. (no issue sending to external) Diagnostic information for administrators: Generating server: DE-VMEXCH02.DartEnergy.local IMCEAEX-_O=CH4+20Pty+20Ltd_ou=First+20Administrative+20Group_cn=Recipients_cn=jliaw@dartcbm.com #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ## Original message headers: Received: from DE-VMEXCH02.DartEnergy.local ([fe80::18ce:f066:f12a:cfe]) by DE-VMEXCH02.DartEnergy.local ([fe80::18ce:f066:f12a:cfe%12]) with mapi id 14.01.0218.012; Thu, 21 Oct 2010 09:57:49 +0800 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: binary From: Joyee Tang <Jtang@dartcbm.com> To: Julisanto Liaw <jliaw@dartcbm.com> Subject: testing Thread-Topic: testing Thread-Index: Actww1xqg2lp67ukSG2MPU/9NnJJLg== Date: Thu, 21 Oct 2010 09:57:48 +0800 Message-ID: <B6CF09D6524D7245BBA687DD4FD0709FA229B6@DE-VMEXCH02.DartEnergy.local> Accept-Language: en-US, en-SG Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: <B6CF09D6524D7245BBA687DD4FD0709FA229B6@DE-VMEXCH02.DartEnergy.local> MIME-Version: 1.0 X-Originating-IP: [192.168.104.66] can somebody help me for this please?julisanto

Did you migrate mailboxes from a different organization? It looks like users are trying to reply to messages that were sent to them before they were migrated to a new organization and you didn't migrate their legacyExchangeDN properties as proxy addresses. In this particular case, the answer would be to add the proxy address "X500:/O=CH4 Pty Ltd/OU=First Administrative Group/CN=Recipients/CN=jliaw@cartcbm.com" without the quotes to Julisanto Liaw's user object. You'll have to do the same kind of thing to every other migrated user to fix this completely.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi Julisanto, How about your question? Any updates? Similar post: http://social.technet.microsoft.com/Forums/en-US/exchangesvrtransport/thread/4aa722af-6ff6-4736-bda1-c129b2e81dc4 More information: Exchange 2007: Delivery has failed to these recipients or distribution lists http://fawzi.wordpress.com/2008/04/11/exchange-2007-delivery-has-failed-to-these-recipients-or-distribution-lists/Frank Wang

Try to send a new mail using the GAL list instead of using the cached recipient(s)Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog